Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
100021goodexcellent61excellent
090022goodexcellent71excellent
080025goodexcellent71excellent
070024goodexcellent71excellent
060024goodexcellent71excellent
050022goodexcellent61excellent
040023goodexcellent71excellent
030033goodexcellent71excellent
020026goodexcellent71excellent
010027goodexcellent81excellent
000036goodexcellent81excellent
230037lightly pollutedexcellent81excellent
220045lightly pollutedexcellent81excellent
210038lightly pollutedexcellent81excellent
200046lightly pollutedexcellent91excellent
190049lightly pollutedexcellent101excellent
180042lightly pollutedexcellent81excellent
170031goodexcellent61excellent
160028goodexcellent51excellent
150025goodexcellent51excellent
140024goodexcellent41excellent
130032goodexcellent51excellent
120033goodexcellent61excellent
110027goodexcellent51excellent